So a few years ago my sister gave me her old Android phone which has the older unlimited data plan and i'm currently using it as a hotspot for my internet, but she wants to get Sprint to use herself. So I was just wondering, would it at all be possible for us to have both Sprint and Verizon at the same time? If so I could continue to pay for the Verizon plan myself so I could continue to make use of it, and my sister could pay for the Sprint service and use it for her own stuff(we both live in the same house in case you're wondering).